NETA 4TH EDITION PRACTICE EXAM
QUESTIONS AND DETAILED
SOLUTIONS 2026
▶ What color test decal you affix to a protective device that is not suitable
for service? Answer: ***Red
▶ What is the insulation level of a cable marked MV-90/175mils? Answer:
100%
▶ What can change the voltage output of an energized transformer?
Answer: ***Load-tap-changer
▶ Shielded cables and twisted pairs are used more frequently in
communication circuits to reduce mutual coupling. Answer: ***True
▶ An electrical hazard/risk analysis only looks at the hazards involved with
performing energized work. Answer: ***False
▶ In a three-phase connection, the current that flows in a winding is the
_____ current. Answer: ***Phase
▶ What is the NETA-ATS recommended test voltage for a 15 minute
withstand test on a 3-phase, 34.5kV line sectionalizer with a rated impulse
withstand voltage of 150kV? Answer: ***78kVAC
▶ When measuring voltage with a multirange voltmeter, which one of the
following ranges should be applied first? Answer: ***0-1000 V
▶ Electromotive force is measured in _____. Answer: ***volts
▶ Power Factor equals? Answer: ***Watts / VA
▶ What is the minimum oxygen level before entering a transformer?
Answer: ***11.5%
, ▶ To make a resistance measurement, start with the ohmmeter set on:
Answer: ***The lowest scale
▶ When the thermal memory is switched on for digital overcurrent
protective devices (OCPDs) used on low-voltage circuit breakers, what
effect will it have on the long time delay (LTD) operating time? Answer:
***It will decrease LTD somewhat.
▶ Medium-voltage cable, in accordance with NEC Article 328, is defined as
single or multiconductor solid dielectric insulated cable rated at ____ volts
or higher for use on power systems rated up to 35kV. Answer: ***1001
▶ A 120VDC circuit measures a current of 0.83 amperes, how many watts
are in this circuit? Answer: ***145
▶ A given 120VAC 60Hz circuit has a load of 10A with a 20° lagging power
factor for 30 minutes. What is the true power? Answer: ****310.58 Watts
***1127.63 Watts
▶ The accuracy rating of a specific analog ammeter is +/- 1% of full scale.
A measurement is taken at 25% of full scale. The accuracy of this
measurement is +/- Answer: 2.5%
▶ The sum of the voltage drops around a series circuit is _____? Answer:
Equal to the applied voltage
▶ According to NFPA 70E, all circuits must be analyzed for safety.
Answer: ***True
▶ The first step in circuit breaker operation should be to find and read the
_______. Answer: ***Manufacturers instructions
▶ Evaluate (1/4)^3. Answer: ***1/64
▶ Polarization index is defined as the ratio of the measured insulation
resistance at what two specific times? Answer: ***10 minutes to 1 minute
▶ Liquid samples that were drawn when the liquid was below 32 degrees
F: Answer: ***May not reveal free water
QUESTIONS AND DETAILED
SOLUTIONS 2026
▶ What color test decal you affix to a protective device that is not suitable
for service? Answer: ***Red
▶ What is the insulation level of a cable marked MV-90/175mils? Answer:
100%
▶ What can change the voltage output of an energized transformer?
Answer: ***Load-tap-changer
▶ Shielded cables and twisted pairs are used more frequently in
communication circuits to reduce mutual coupling. Answer: ***True
▶ An electrical hazard/risk analysis only looks at the hazards involved with
performing energized work. Answer: ***False
▶ In a three-phase connection, the current that flows in a winding is the
_____ current. Answer: ***Phase
▶ What is the NETA-ATS recommended test voltage for a 15 minute
withstand test on a 3-phase, 34.5kV line sectionalizer with a rated impulse
withstand voltage of 150kV? Answer: ***78kVAC
▶ When measuring voltage with a multirange voltmeter, which one of the
following ranges should be applied first? Answer: ***0-1000 V
▶ Electromotive force is measured in _____. Answer: ***volts
▶ Power Factor equals? Answer: ***Watts / VA
▶ What is the minimum oxygen level before entering a transformer?
Answer: ***11.5%
, ▶ To make a resistance measurement, start with the ohmmeter set on:
Answer: ***The lowest scale
▶ When the thermal memory is switched on for digital overcurrent
protective devices (OCPDs) used on low-voltage circuit breakers, what
effect will it have on the long time delay (LTD) operating time? Answer:
***It will decrease LTD somewhat.
▶ Medium-voltage cable, in accordance with NEC Article 328, is defined as
single or multiconductor solid dielectric insulated cable rated at ____ volts
or higher for use on power systems rated up to 35kV. Answer: ***1001
▶ A 120VDC circuit measures a current of 0.83 amperes, how many watts
are in this circuit? Answer: ***145
▶ A given 120VAC 60Hz circuit has a load of 10A with a 20° lagging power
factor for 30 minutes. What is the true power? Answer: ****310.58 Watts
***1127.63 Watts
▶ The accuracy rating of a specific analog ammeter is +/- 1% of full scale.
A measurement is taken at 25% of full scale. The accuracy of this
measurement is +/- Answer: 2.5%
▶ The sum of the voltage drops around a series circuit is _____? Answer:
Equal to the applied voltage
▶ According to NFPA 70E, all circuits must be analyzed for safety.
Answer: ***True
▶ The first step in circuit breaker operation should be to find and read the
_______. Answer: ***Manufacturers instructions
▶ Evaluate (1/4)^3. Answer: ***1/64
▶ Polarization index is defined as the ratio of the measured insulation
resistance at what two specific times? Answer: ***10 minutes to 1 minute
▶ Liquid samples that were drawn when the liquid was below 32 degrees
F: Answer: ***May not reveal free water
